Matricaria ambigua auct. non (Ledebour) Maximowicz ex Krylov

Matricaria ambigua auct. non (Ledebour) Maximowicz ex Krylov is a synonym sensu Elven, 2007+ of:

Tripleurospermum maritimum subsp. phaeocephalum (Ruprecht) Hämet-Ahti, an accepted subspecies name sensu FNA Ed. Comm., 2006a.